Deflating valve cap



Get. 9, 1928. fi,686,65:.2=

R. H. HENEMIER DEFLATIN G VALVE CAP Original Filed Aug. 10. 1922 INVENTOR Q By Attorneys,

Patented Oct. 9, 1928.

UNITED STATES ROBERT E. HENEMIER, OF NEW YORK, N. Y., ASSIGNOR TO A. SCHRADERS SON, IN- COBZ PORATED, F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

nnrnn rme VALVE car.

Application filed August 10, 1822, Serial No. 580,943. Renewed March 3, 1928.

The present invention relatesto deflating valve caps and aims to provide certain im provements therein. I.

An object of the present invention 15 to provide a deflating valvecap which w1ll have all the characteristics of the standard valve cap now' upon the market, and 1n addition thereto have a tire valve deflating means which will hold a tire valve in unseated posi- 10 tion without necessitating the deflator being held by the operator throughout the period Another object of the invention is to provide the standard valve cap having a screw-driver projection and an overall d1- ameter less than the diameter of the valve casing with deflating means which will not interfere with the functioning of' the screwdriver project-ion or preclude the applicationof a quick acting dust cap thereover.

Astill further object of the invention is to; rovide a valvedeflating cap in which the 'defllitor is normally urged to a position to .unseatlthe'tirevalve when the deflator is 5fplaced'incontact therewith. With these and otherob ects in view, I j have devised the valve deflating cap of f the present invention which in its essential parts consists of a standard valve cap,

I the screw-driver projection of which carries 'deflating means, and means for detachably holding the deflating means in operative position on a valve stem.

In the accompanying drawings wherein I have shown the preferred embodiments of my invention,--

Figure l is a longitudinal section of the invention applied over the nipple of a valve casing, the latter being shown in elevation;

40 Fig. 2 is a longitudinal section of the invention showing the deflating .means in operative position upon a valve casing, the latter being shown in section;

Fig; 3 is a section similar to Fig. 1, show ing a modification;

Fig. 4 is a section'taken on the line 4-4 of Fig. 3; w

Fig. 5 is an elevation of the invention shown in Fig. 1, taken at right angles thereto.

Referring to the drawings, let A indicate a valve casing having a valve inside B positioned therein, and the valve deflating cap of the present invention C adapted to fit the end of the casing A. The valve inside B as shown b, and the asa unit. The valve deflating cap C comprises essentially two elements, namely, the valve cap D and the deflating means E.

' The valve cap D is preferably of standard construction, and consists of a shell formed of a single piece of metal drawn to suitable shape and having an internally threaded portion F, an intermediate portion G, and a hollow screw-driver projection H having the usual slots I formed therein. The intermediate portion G is preferably enlarged and has its exterior milled or knurled to provide a suitable gripping surface therefor.- This enlargement provides an enlarged interior chamber above the. screw-threaded portion in which is'located a dome shaped pack- I ing gasket K adapted to provide a tight seal with the top of the valve stem. This packing gasket 1s preferably provided at its top with a dome-shaped anti-friction member L and reinforced by a correspondingly shaped washer M embedded within the gasket. The

construction of the cap member D thus far described'is substantially that of the standard valve cap now upon the market.

According to the present invention, such valve cap is provided with valve deflating means so associated therewith as not to interfere with the functions which said cap is normally called upon to erform. The valve deflating means is preferably carried by the screw-driver pro'ection H on its exterior, and, as herein s own, consists of a disk-like member N having a bushing ex,- tension 0 and a lip P bent inwardly at right angles with respect thereto, and extendin into the hollow portion of the screwdriver projection through a suitable opening Q formed in the side wall thereof preferably below the top. The lip P is adapted to function as, a deflator. In order to hold the deflating means in operative position on a valve stem, so as to maintain the valve check in unseated position, the exterior of the bushing O is provided with screwthreads adapted to engage the internal thread of the valve casing. It will be understood,-however, that any other suitable means carried by the valve cap or the member N,

which will not interfere with the functioning of the screw-driver projection, may be employed for this purpose. The deflatin means as thus described is slidably mounte on the screw-driver projection, but] it will be understood that said means may also be the ot er end against the deflator.

rotatably mounted thereon if desired.

In the embodiment of the invention shown in Fig. 3, the deflating means is sli'dably mounted on the screw-driver projection and the vdeflator normally. urged toward the top of the screw-driver projection by res-ili-v .ent means associated. therewith. As herein shown, the resilient-mean'sconsists of a helical spring R,-'located within the'hollow pro; jection, one end of the spring bearing against the to of the anti-friction member L and j In this construction the means for holding the 'deflator in operative engagement-With the valve is at all times in a position facilitating suchengagement because of the spring action on said means. In the construction shown'in Figs. 1 and 2 the deflating means may be either first moved to the top of the screw-driver projection to bring the holdin means into engaging position with the Va ve, or the screw-driver projection inserted into the valve nipple until the deflator Q engages the top of the valve pin, and. the cap or holding means then turned into holding engagement with said valve. In resorting to this latter practice, care must be exercised to avoid having the slots I in the screwdriverprojection engage the lugs b on the valve inside, as such engagement wouldprevent the turning of the holding means into holding engagement with the valve.

While I have shown and described the referred embodiments of my invention, do not wish-to be limited to the specific constructions disclosed, since various changes may be resorted to without departing from the spirit of the invention. r 'fWhat l'claim is :e-i,

. f Ii-QInco'rhbindtioxif with a tire valve cap having a hollow projection with. slot in the side thereof, of a deflator comprising a mem- Y ber engaging over said projection and having means for tachably engaging the end ortionof a valve stem, and a part ext'en ing 'into'the hollow projection of the cap through the slot in the side thereof to serve as a tire valve unseating means. p

2. In COmbIIIatIOD WKh .a t1re valve cap having a hollow projection with a slot in the side thereof, of a defiator comprising a'meinber slidably engaging over said 'pro-- jection and having means for detachably' engaging the end portion of a valve stem, and a part extending into the hollow projection of the cap through the slot in the side thereof to serve as a tire valve unseating means, and'spring means within the hollow projection normally urging the inwardlyextending part of the deflator toward the top of the hollow projection. U

3. In combination with a tire valve cap having a hollow projection with a slot cut in the side thereof, of a defiator comprising a disk having a hollow externally-threaded ROBERT H. HENEMIER. 

